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Paladinen [302]
3 years ago
9

A quiz consists of 10 multiple-choice questions, each with 4 possible answers, only one of which is correct. A student who does

not attend lectures on a regular basis has no clue what the answers are, and therefore uses an independent random guess to answer each of the 10 questions. What is the probability that the student gets at least one question right
Mathematics
1 answer:
Fofino [41]3 years ago
7 0

Answer:

.943686485

Step-by-step explanation:

1=p(0)+p(1)+p(2)+p(3)+.....p(10)

1-p(0)=P(1)+p(2)+p(3)+....p(10)

or

1-p(0)= p(at least one)

p(0)=

{10\choose0}*.25^0*.75^{10}=.056313515

1-.056313515=.943686485

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What is another way to name Plane P?
nydimaria [60]
You can name Plane P, many different ways,
Assuming you are asking this out of a textbook staring at a figure of a Parallelogram, their are probably points inside that shape and the way you would name it would be naming using any three points in the plane that are NOT on the same line in any order. <span />
6 0
3 years ago
If an image is to be reflected in the line y = x and the x-axis, does the order of the reflections affect the final image? Expla
OverLord2011 [107]

Answer:

Affects

Step-by-step explanation:

Consider point (2,-1).

1. Reflect it in the line y=x, then the image point will have coordinates (-1,2). Now reflect it in the x-axis, then the image point will have coordinates (-1,-2).

2. Reflect the point (2,-1) in the x-axis. Its image is point (2,1). Reflect this point in the line y=x, then its image will be point (1,2).

Since images in 1st case and 2nd case differ, the order affects the final image.

4 0
3 years ago
PLS HELP TIMED QUESTION!!!
ser-zykov [4K]

Answer:

About 5043.58

Step-by-step explanation:

The standard form for an exponential decay after t time is:

\displaystyle f(t)=a(r)^{t/d}

Where a is the initial value, r is the rate decay, t is the time that has passed, and d is the amount of time it takes for 1 cycle.

The initial value is 9800. So a = 9800.

The quantity cuts in half. So, r = 1/2.

And it cuts in half every 6 days. For this question, we will convert this to hours. 6 days = 144 hours. So, we can let d = 144, where t will be in hours.

Therefore, our function is:

\displaystyle f(t)=9800\Big(\frac{1}{2}\Big)^{t/144}

Where t is the amount of time that has passed, in hours.

Then the quantity left after 138 hours will be:

\displaystyle f(138)=9800\Big(\frac{1}{2}\Big)^{138/144}\approx 5043.58

7 0
2 years ago
What is the solution to the graph below?
Afina-wow [57]

Answer:

3;1

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I need help with this problem.<br><br>​
Maksim231197 [3]

Answer: y = -1/4x - 4

Step-by-step explanation:

y = (-1/4)x + 2 (This is the first linear function.)

(4,3) has slope of (-1/4)x  or (1/-4)x

4(y2) - 4(y1= the new y  -1(x2) -3(x1) = new x which leads to (0,-4) so y-intercept = -4

so all in all, y = (-1/4)x -4 is the answer

Hopefully, you're able to understand this. It's difficult to explain through typed words rather than visually and through a written example.

6 0
3 years ago
Read 2 more answers
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